What do these Tenth Edition creatures have in common?
They are all creatures "shaped" by spellshapers in Future Sight: Cloudseeder, Skirk Ridge Exhumer, Sparkspitter, and Llanowar Mentor.
Magic Online creates tokens when you activate these spellshapers, but you might use spare copies of the creatures from Tenth Edition as their tokens in the tabletop world.
Sliversmith makes a Metallic Sliver token, which of course doesn't appear in Tenth Edition. A vanilla, artifact Sliver would have been pretty strange all by itself in a core set!
But the biggest mystery is Goldmeadow Lookout. It creates a token with the name of no existing Magic card. Future Sight indeed?